GLM 5 vs GLM 5.1
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GLM 5 and GLM 5.1.
GLM 5
GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows. Built for expert developers, it delivers production-grade performance on large-scale programming tasks, rivaling leading...
GLM 5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Technical Specifications
| Specification | GLM 5 | GLM 5.1 |
|---|---|---|
| Provider | Zhipu AI | Zhipu AI |
| Context Window | 202,752 tokens | 202,752 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2026-02-11 | 2026-04-07 |
API Pricing Comparison
Input Price per Million Tokens
GLM 5
$0.60
GLM 5.1
$0.97
Output Price per Million Tokens
GLM 5
$1.92
GLM 5.1
$3.04
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GLM 5 Quirks & Gotchas
No developer gotchas reported.
GLM 5.1 Quirks & Gotchas
No developer gotchas reported.